How often should a cat poop?

Wow, just bing glad I woke up this morning and saw my cat pooping at all! After struggling for 2 days cat and seeing nothing in the litterbox, I'm happy when there's anything!
I suspect that cats are like people in that how often they poop can vary a lot. Mine poops once every blue moon! And According to her vet, a cat should poop once daily and it should be solid. But this one is being so very secretive about it sometimes! I can't even tell they pooped!!!
So how many times do cats usually go poop a day?

Cows milk is very bad for cats, even kittens (you can buy special kitten milk at the vet) Adult cats do not need any milk. Give your cat a dishful of dry cat food (Meow mix or the vet usually carries a more expensive brand some owners and cats prefer) and a full, clean dish of water - both available all day. I also give mine a spoonful of canned food morning and night as a treat. If I'm really feeling generous, I may share some scraps from some fish I've cooked for myself or a spoonful of canned tuna.

Risk: Once upon a time, there was a man, during the cave-age days, and he owned a cat that cat had trouble letting herself, so he used "Suppositories" on her, and that's when the great- flood happened.

And inhabitants of cave-town inscripted the story on the inner walls of their cave Habitat !

No. she is a household cat and has not ventured outside yet. Her previous family kept as an indoor cat only and she is rather chubby.

TB: I'm very bad with cat keeping skills as i have never owned a cat before. All i know is that She eats canned food which a mix of seafood with other stuff that her race likes. Usually I’ll scoop out a spoonful or tow and dump on her plate with a cup of milk to go with it ^_*

Cherukhan: I took her to the Vet already. Thanks for the reminder tho.